Harmonai ACT-920 Dual-Channel True Diversity Wireless Microphone image 1

Harmonai ACT-920 Dual-Channel True Diversity Wireless Microphone — 500m Ultra-Long-Range UHF System

The Harmonai ACT-920 is a professional dual-channel true diversity wireless microphone system operating in the UHF 560–680 MHz band with 400 selectable channels and up to ~500 mete...

$142.90

Model: ACT-920
Category: Microphones
Images: 4 images
Status: ready

Product Brief

Harmonai ACT-920 Dual-Channel True Diversity Wireless Microphone — 500m Ultra-Long-Range UHF System

Overview

The Harmonai ACT-920 is a professional dual-channel true diversity wireless microphone system operating in the UHF 560–680 MHz band with 400 selectable channels and up to ~500 mete...

Price: $142.90
Model: ACT-920
Category: Microphones

Specifications

Parameter	Value
Frequency Range	560–680 MHz
Operating Bandwidth	120 MHz
Number of Channels	400
Channel Spacing	300 kHz
Modulation Method	Pure digital DQPSK modulation with digital encrypted ID
Effective Transmission Distance	Approx. 500 meters (subject to environmental conditions)
Signal-to-Noise Ratio (SNR)	>100 dB
Operation Method	Human-machine interactive encoder operation
Receiver Display	Dual 2.4-inch color LCD synchronized display
Power Input	5 V / 2 A (Type-C interface)
Frequency Synthesis Method	PLL phase-locked loop frequency synthesis
Transmitter Output Power	10 mW
Frequency Tolerance	±10 kHz
Transmitter Display	0.96-inch high-definition color display (portrait & landscape modes)
Frequency Synchronization	Infrared synchronization
Microphone Types Supported	Handheld dynamic / Conference lavalier / Headset condenser
Transmitter Power Supply	Two AA batteries
Continuous Operating Time	Over 6 hours
Audio Outputs	2× XLR balanced (per channel) + 1× 6.35 mm unbalanced (mixed output) + 1× XLR balanced (mixed output)
Antenna Terminals	Dual-path true diversity with four antenna connectors

Service Support

We support project consultation, model recommendation, bulk purchasing and catalog delivery for retail, multipurpose halls, conference rooms and live events.

Business hours: Monday to Friday 09:00 - 18:30
Inquiry channels: phone / email / website form
Tip: share budget, quantity and use scenario in advance

Harmonai ACT-920 Dual-Channel True Diversity Wireless Microphone product image

Product Overview

The Harmonai ACT-920 is a professional-grade dual-channel true diversity wireless microphone system, operating in the UHF 560–680 MHz band with 400 selectable channels and an effective transmission range of approximately 500 meters. The receiver features dual-path true diversity with four antennas, combined with pure digital DQPSK modulation and digital encrypted ID technology to ensure stable signal performance and strong interference resistance. Its dual 2.4-inch color LCD display enables intuitive human-machine interactive encoder operation for quick and clear setup. Compatible with handheld dynamic, conference lavalier, and headset condenser transmitters — ideal for conferences, live performances, KTV, and educational applications.

Frequency Range

560–680 MHz (120 MHz operating bandwidth)

Number of Channels

400 selectable channels

Channel Spacing

300 kHz

Modulation Method

Pure digital DQPSK modulation with digital encrypted ID

Effective Transmission Distance

Approx. 500 meters (subject to environmental conditions)

Signal-to-Noise Ratio (SNR)

>100 dB

Receiver Display

Dual 2.4-inch color LCD synchronized display

Power Input

5 V / 2 A (Type-C interface)

Frequency Synthesis Method

PLL phase-locked loop frequency synthesis

Transmitter Output Power

10 mW

Transmitter Display

0.96-inch high-definition color display (portrait & landscape modes)

Frequency Synchronization

Infrared synchronization

Microphone Types Supported

Handheld dynamic / Conference lavalier / Headset condenser

Continuous Operating Time

Over 6 hours (depending on battery capacity)

Audio Outputs

2× XLR balanced (per channel) + 1× 6.35 mm unbalanced (mixed) + 1× XLR balanced (mixed)

Antenna Configuration

Dual-path true diversity with four antenna connectors

Recommended Applications

Ideal for professional conferences, stage performances, KTV entertainment, training & education, and wedding hosting. Dual independent channel outputs support discrete audio source handling, while true diversity reception ensures consistent, stable coverage across large venues.

Learn more about the Harmonai ACT-920 dual-channel true diversity wireless microphone — including full technical specifications and procurement details. Contact us today for customized quotations and system integration support.